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| author | Mauro Carvalho Chehab | 2015-10-01 23:07:53 +0200 |
|---|---|---|
| committer | Mauro Carvalho Chehab | 2015-10-01 23:10:05 +0200 |
| commit | ef69ee1bc2c10fd1c5b389258d8156f3c38bdb33 (patch) | |
| tree | a5c80cbea5086ebfee9f72b1905e13f44da6192a | |
| parent | Revert "[media] rcar_vin: call g_std() instead of querystd()" (diff) | |
| download | kernel-qcow2-linux-ef69ee1bc2c10fd1c5b389258d8156f3c38bdb33.tar.gz kernel-qcow2-linux-ef69ee1bc2c10fd1c5b389258d8156f3c38bdb33.tar.xz kernel-qcow2-linux-ef69ee1bc2c10fd1c5b389258d8156f3c38bdb33.zip | |
[media] media-entity.c: get rid of var length arrays
Fix those sparse warnings:
drivers/media/media-entity.c:238:17: warning: Variable length array is used.
drivers/media/media-entity.c:239:17: warning: Variable length array is used.
That allows sparse and other code check tools to verify if the
function is using more stack than allowed.
It also solves a bad Kernel pratice of using var length arrays
at the stack.
Signed-off-by: Mauro Carvalho Chehab <mchehab@osg.samsung.com>
| -rw-r--r-- | drivers/media/media-entity.c | 4 | ||||
| -rw-r--r-- | include/media/media-entity.h | 7 |
2 files changed, 9 insertions, 2 deletions
diff --git a/drivers/media/media-entity.c b/drivers/media/media-entity.c index 153a46469814..767fe55ba08e 100644 --- a/drivers/media/media-entity.c +++ b/drivers/media/media-entity.c @@ -235,8 +235,8 @@ __must_check int media_entity_pipeline_start(struct media_entity *entity, media_entity_graph_walk_start(&graph, entity); while ((entity = media_entity_graph_walk_next(&graph))) { - DECLARE_BITMAP(active, entity->num_pads); - DECLARE_BITMAP(has_no_links, entity->num_pads); + DECLARE_BITMAP(active, MEDIA_ENTITY_MAX_PADS); + DECLARE_BITMAP(has_no_links, MEDIA_ENTITY_MAX_PADS); unsigned int i; entity->stream_count++; diff --git a/include/media/media-entity.h b/include/media/media-entity.h index 0c003d817493..197f93799753 100644 --- a/include/media/media-entity.h +++ b/include/media/media-entity.h @@ -116,6 +116,13 @@ static inline u32 media_entity_subtype(struct media_entity *entity) #define MEDIA_ENTITY_ENUM_MAX_DEPTH 16 #define MEDIA_ENTITY_ENUM_MAX_ID 64 +/* + * The number of pads can't be bigger than the number of entities, + * as the worse-case scenario is to have one entity linked up to + * MEDIA_ENTITY_ENUM_MAX_ID - 1 entities. + */ +#define MEDIA_ENTITY_MAX_PADS (MEDIA_ENTITY_ENUM_MAX_ID - 1) + struct media_entity_graph { struct { struct media_entity *entity; |